By Anjali Srivastava A peak flow meter is a handy, portable device that measures how fast air leaves the lungs. It plays a ...

A peak expiratory flow rate (PEFR) measures how effectively you exhale. Also called a peak flow meter, this handheld device helps you document the amount of air and the speed at which you can ...

TeleBreather is a remote, electronic, handheld device that one can use at home to test how well the lungs are working. It accurately measures various volumes of air that can forcibly expel from the ...